Tuvix
If you are worried about not being able to be woken when needed because of your small child, you might look at some of the natural sleep aids like melitonin (sp) or valerian root.
They help enduce sleep, but don't put you into such a deep sleep like prescription and OTC sleep aids that it is difficult for you to be woken should your child cry in the night or some other reason you need to be able to be waken.
There is one mild prescripton sleep aid,
Rozerem that I have found is helpful with sleep but doesn't put you into such a deep sleep like Ambian or AmbianCR where it could take an explosion to wake you

.
Hope this helps.
Paul
w w w . E a s y M e d s 2 0 0 5 . N E T
Paul